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Sienna | Women's High-Slit Asymmetric-Waist Square-Neck Fall Wedding Guest Maxi Dress

Regular price $112.00 $55.95 Sale price Save 50%
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Meet the Sienna Women's High-Slit Asymmetric-Waist Square-Neck Fall Wedding Guest Maxi Dress, a showstopper built for weddings, galas, and any dressed-up formal night. The bodice is corset-inspired and fully structured, framed by a straight square neckline and wide supportive straps, while the skirt cascades into uneven pleats that break into a high thigh-skimming slit — the result is a sculpted hourglass shape with plenty of built-in drama and movement.

Why You'll Love It

  • Corset-Style Fitted Waist: A structured bodice nips in at the middle, sculpting an hourglass line naturally, with no shapewear required.
  • Uneven Pleated Skirt: The floor-length skirt drapes in cascading, asymmetric pleats for a fluid yet sculptural finish.
  • Wide-Strap Square Neckline: A clean, straight square neck paired with sturdy shoulder straps gives the décolletage a polished, refined frame.

Perfect For

Turning heads as a wedding guest, pairing with strappy heels and bold earrings for a black-tie gala, dressing up an upscale cocktail affair, or sweeping in for a memorable prom entrance.

Care Instructions

  • Hand wash, or machine wash cold on the delicate cycle.
  • Skip the bleach.
  • Lay flat or hang to dry — steer clear of the tumble dryer to keep the pleats intact.
  • If needed, iron inside-out on a cool setting.

Frequently Asked Questions

How does this gown close?
A back zipper gives it a secure, easy-to-wear fit.

What sizes are available?
Sizing runs from S to 3XL — refer to the size chart below for exact measurements.

How high does the side slit sit?
It rises up to the thigh, lending the gown movement and a bold, elegant edge with every step.

What occasions is this gown suited for?
Weddings, black-tie galas, cocktail parties, and prom nights — it moves easily from daytime celebrations to evening affairs.

Size Chart

Size Bust Waist Hips Length
S 86 cm / 33.9 in 66 cm / 26 in 92 cm / 36.2 in 130 cm / 51.2 in
M 90 cm / 35.4 in 70 cm / 27.6 in 96 cm / 37.8 in 131 cm / 51.6 in
L 94 cm / 37 in 74 cm / 29.1 in 100 cm / 39.4 in 132 cm / 52 in
XL 98 cm / 38.6 in 78 cm / 30.7 in 104 cm / 40.9 in 133 cm / 52.4 in
2XL 102 cm / 40.2 in 82 cm / 32.3 in 108 cm / 42.5 in 134 cm / 52.8 in
3XL 106 cm / 41.7 in 86 cm / 33.9 in 112 cm / 44.1 in 135 cm / 53.1 in

 

At Nicole's Coastal Boutique, customer satisfaction comes first. That's why we keep you constantly updated on your order and always offer free shipping with a track & trace code.

We offer a 100% money-back guarantee within 30 days of receiving your order. If you're not completely satisfied, simply return your item for a full refund—no questions asked.

Our customer service is available 24/7 to answer all your questions and comments. Whether you need advice on a product or help with an order, we are here to support you.

Don’t hesitate to contact us; we’re happy to help!

Please contact us at info@nicolescoastalboutique.com

A Little More to Love

The more you add, the more you save.

For today only, we're unlocking something special for our community: stackable savings on the pieces everyone can't stop reaching for.

Whether you're picking out something for your daughter, surprising your sister, or finally treating yourself, now's the moment to grab those favorites before they're gone.

Build your own bundle:

Buy 2 pieces → Extra 10% off
Buy 3 → Extra 15% off
Buy 4 → Extra 20% off
Buy 5+ → Extra 25% off

This offer runs today only and won't be coming back. And you know how it goes with us: once a style sells out, it's gone for good.

Stock is limited. Today's the day to shop.

FREE SHIPPING WITHIN THE U.S.

We make shopping effortless with free delivery anywhere in the United States on all orders, so your items arrive safely and conveniently at your door.

30-DAY RETURNS

If your piece isn’t the perfect fit, you can easily return it within 30 days of delivery. Your satisfaction always comes first

Loved for the comfort

Our pieces are chosen for comfort you can feel and style you can count on. Relax, feel confident, and enjoy timeless elegance daily.

FREE SHIPPING WITHIN THE U.S.

We make shopping effortless with free delivery anywhere in the United States on all orders, so your items arrive safely and conveniently at your door.

30-DAY RETURNS

If your piece isn’t the perfect fit, you can easily return it within 30 days of delivery. Your satisfaction always comes first

Loved for the comfort

Our pieces are chosen for comfort you can feel and style you can count on. Relax, feel confident, and enjoy timeless elegance daily.